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3. A massless spring is used to launch a 0.25 kg ball directly upward. The spring has a spring constant of 450 N/m and is compressed by 0.67 m. The ball is placed on the spring, and then the spring is released. How fast is the ball traveling when it leaves the spring? How high will the ball go? Think about energy principles. Speed = Height =

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Cempremion 2 mar マt leave, spornasoo-67 Boily Reacho a mai 2mg

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